Created attachment 614467[details]
Mozilla Marketplace.png
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:12.0) Gecko/20100101 Firefox/12.0
Build ID: 20120328051619
Steps to reproduce:
Navigated to https://www.mozilla.org/en-US/apps/, played the video on the page (work absolutely fine). Then pressed the full-screen button in the right of the controller overlay.
Actual results:
Firefox went into full-screen mode, but the video only took up a third of the screen. (Pulled to the left) Behind it was the parent page. The video seemed to want to stick to its original resolution.
See my screenshot - a picture is worth a thousand words.
Expected results:
It should have upscaled the video to take up the rest of the screen (like most video players do in full-screen). The page should not be visible.
(A separate issue, but when in full-screen mode watching a video, the chrome (tabs, URL box, search box) should be hidden like other other video players do - maybe should be an option)